mirror of
https://github.com/sqlite/sqlite.git
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Merge the JSON function enhancements from the json-enhancements branch into
json-in-core. FossilOrigin-Name: e116501c2f0e594eb7a3dd804daa943cc508f32ded3078aed21b695ec83bcd4c
This commit is contained in:
drh
12
Makefile.msc
12
Makefile.msc
@@ -580,17 +580,17 @@ RCC = $(RC) -DSQLITE_OS_WIN=1 -I. -I$(TOP) -I$(TOP)\src $(RCOPTS) $(RCCOPTS)
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#
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!IF $(USE_STDCALL)!=0 || $(FOR_WIN10)!=0
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!IF "$(PLATFORM)"=="x86"
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CORE_CCONV_OPTS = -Gz -DSQLITE_CDECL=__cdecl -DSQLITE_APICALL=__stdcall -DSQLITE_CALLBACK=__stdcall -DSQLITE_SYSAPI=__stdcall
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SHELL_CCONV_OPTS = -Gz -DSQLITE_CDECL=__cdecl -DSQLITE_APICALL=__stdcall -DSQLITE_CALLBACK=__stdcall -DSQLITE_SYSAPI=__stdcall
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CORE_CCONV_OPTS = -Gz -guard:cf -DSQLITE_CDECL=__cdecl -DSQLITE_APICALL=__stdcall -DSQLITE_CALLBACK=__stdcall -DSQLITE_SYSAPI=__stdcall
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SHELL_CCONV_OPTS = -Gz -guard:cf -DSQLITE_CDECL=__cdecl -DSQLITE_APICALL=__stdcall -DSQLITE_CALLBACK=__stdcall -DSQLITE_SYSAPI=__stdcall
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# <<mark>>
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TEST_CCONV_OPTS = -Gz -DSQLITE_CDECL=__cdecl -DSQLITE_APICALL=__stdcall -DSQLITE_CALLBACK=__stdcall -DSQLITE_SYSAPI=__stdcall -DINCLUDE_SQLITE_TCL_H=1 -DSQLITE_TCLAPI=__cdecl
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TEST_CCONV_OPTS = -Gz -guard:cf -DSQLITE_CDECL=__cdecl -DSQLITE_APICALL=__stdcall -DSQLITE_CALLBACK=__stdcall -DSQLITE_SYSAPI=__stdcall -DINCLUDE_SQLITE_TCL_H=1 -DSQLITE_TCLAPI=__cdecl
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# <</mark>>
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!ELSE
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!IFNDEF PLATFORM
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CORE_CCONV_OPTS = -Gz -DSQLITE_CDECL=__cdecl -DSQLITE_APICALL=__stdcall -DSQLITE_CALLBACK=__stdcall -DSQLITE_SYSAPI=__stdcall
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SHELL_CCONV_OPTS = -Gz -DSQLITE_CDECL=__cdecl -DSQLITE_APICALL=__stdcall -DSQLITE_CALLBACK=__stdcall -DSQLITE_SYSAPI=__stdcall
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CORE_CCONV_OPTS = -Gz -guard:cf -DSQLITE_CDECL=__cdecl -DSQLITE_APICALL=__stdcall -DSQLITE_CALLBACK=__stdcall -DSQLITE_SYSAPI=__stdcall
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SHELL_CCONV_OPTS = -Gz -guard:cf -DSQLITE_CDECL=__cdecl -DSQLITE_APICALL=__stdcall -DSQLITE_CALLBACK=__stdcall -DSQLITE_SYSAPI=__stdcall
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# <<mark>>
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TEST_CCONV_OPTS = -Gz -DSQLITE_CDECL=__cdecl -DSQLITE_APICALL=__stdcall -DSQLITE_CALLBACK=__stdcall -DSQLITE_SYSAPI=__stdcall -DINCLUDE_SQLITE_TCL_H=1 -DSQLITE_TCLAPI=__cdecl
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TEST_CCONV_OPTS = -Gz -guard:cf -DSQLITE_CDECL=__cdecl -DSQLITE_APICALL=__stdcall -DSQLITE_CALLBACK=__stdcall -DSQLITE_SYSAPI=__stdcall -DINCLUDE_SQLITE_TCL_H=1 -DSQLITE_TCLAPI=__cdecl
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# <</mark>>
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!ELSE
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CORE_CCONV_OPTS =
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@@ -502,12 +502,12 @@ RCC = $(RC) -DSQLITE_OS_WIN=1 -I. -I$(TOP) $(RCOPTS) $(RCCOPTS)
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#
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!IF $(USE_STDCALL)!=0 || $(FOR_WIN10)!=0
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!IF "$(PLATFORM)"=="x86"
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CORE_CCONV_OPTS = -Gz -DSQLITE_CDECL=__cdecl -DSQLITE_APICALL=__stdcall -DSQLITE_CALLBACK=__stdcall -DSQLITE_SYSAPI=__stdcall
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SHELL_CCONV_OPTS = -Gz -DSQLITE_CDECL=__cdecl -DSQLITE_APICALL=__stdcall -DSQLITE_CALLBACK=__stdcall -DSQLITE_SYSAPI=__stdcall
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CORE_CCONV_OPTS = -Gz -guard:cf -DSQLITE_CDECL=__cdecl -DSQLITE_APICALL=__stdcall -DSQLITE_CALLBACK=__stdcall -DSQLITE_SYSAPI=__stdcall
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SHELL_CCONV_OPTS = -Gz -guard:cf -DSQLITE_CDECL=__cdecl -DSQLITE_APICALL=__stdcall -DSQLITE_CALLBACK=__stdcall -DSQLITE_SYSAPI=__stdcall
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!ELSE
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!IFNDEF PLATFORM
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CORE_CCONV_OPTS = -Gz -DSQLITE_CDECL=__cdecl -DSQLITE_APICALL=__stdcall -DSQLITE_CALLBACK=__stdcall -DSQLITE_SYSAPI=__stdcall
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SHELL_CCONV_OPTS = -Gz -DSQLITE_CDECL=__cdecl -DSQLITE_APICALL=__stdcall -DSQLITE_CALLBACK=__stdcall -DSQLITE_SYSAPI=__stdcall
|
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CORE_CCONV_OPTS = -Gz -guard:cf -DSQLITE_CDECL=__cdecl -DSQLITE_APICALL=__stdcall -DSQLITE_CALLBACK=__stdcall -DSQLITE_SYSAPI=__stdcall
|
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SHELL_CCONV_OPTS = -Gz -guard:cf -DSQLITE_CDECL=__cdecl -DSQLITE_APICALL=__stdcall -DSQLITE_CALLBACK=__stdcall -DSQLITE_SYSAPI=__stdcall
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!ELSE
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CORE_CCONV_OPTS =
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SHELL_CCONV_OPTS =
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123
doc/json-enhancements.md
Normal file
123
doc/json-enhancements.md
Normal file
@@ -0,0 +1,123 @@
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# Proposed Enhancements To JSON Functions
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## 1.0 New function json_nextract()
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The new function json_nextract() works the same as json_extract() except
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when the input JSON is not well-formed. This is what the routines do
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when the input JSON in the first argument is not well-formed:
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1. **json_extract()** → raises an error and aborts the query.
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2. **json_nextract()** with 2 arguments the second argument is
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exactly `'$'` → work like json_quote() and return the first
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argument as a JSON quoted string.
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3. **json_nextract()** otherwise → return NULL.
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If the input is known to be JSON, then json_extract() should work just
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fine for all your needs. But sometimes a table might have a column that
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sometimes holds JSON and sometimes holds some other content. Suppose,
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for example, an application started out holding a single phone number for
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each user, but later was enhanced so that the same database file could
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hold a JSON array of phone numbers. The USER table might have some entries
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that are JSON arrays and some entries which are just text strings containing
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phone numbers. The application can use json_nextract() to be robust in
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extracting values from that column.
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The feature (2) above is envisioned to be useful for sanitizing table
|
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content. Suppose a table is populated from dirty CSV, and some of the
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JSON is mis-formatted. You could convert all entries in a table to use
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well-formed JSON using something like this:
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> ~~~
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UPDATE data SET jsonData = json_nextract(jsonData,'$');
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~~~
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In the query above, well-formed JSON would be unchanged, and mis-formatted
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JSON would be converted into a well-formatted JSON string.
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## 2.0 Add the `->` and '->>` operators as aliases for json_extract().
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Two new binary operators "`->`" and "`->>`" operators are the same
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as json_nextract() and json_extract(), respectively.
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> ~~~
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SELECT '{"a":5,"b":17}' -> '$.a', '[4,1,-6]' ->> '$[0]';
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~~~
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Is equivalent to (and generates the same bytecode as):
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> ~~~
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SELECT json_nextract('{"a":5,"b":17}','$.a'), json_extract('[4,1,-6]','$[0]');
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~~~
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The ->> operator works the same as the ->> operator in MySQL
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and mostly compatible with PostgreSQL (hereafter "PG"). Addition enhancements
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in section 3.0 below are required to bring ->> into compatibility with PG.
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The -> operator is mostly compatible with MySQL and PG too. The main
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difference is that in MySQL and PG, the result from -> is not a primitive
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SQL datatype type but rather more JSON. It is unclear how this would ever
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be useful for anything, and so I am unsure why they do this. But that is
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the way it is done in those system.
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SQLite strives to be compatible with MySQL and PG with the ->> operator,
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but not with the -> operator.
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## 3.0 Abbreviated JSON path specifications for use with -> and ->>
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The "->" and "->>" and operators allow abbreviated
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forms of JSON path specs that omit unnecessary $-prefix text. For
|
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example, the following queries are equivalent:
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|
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> ~~~
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SELECT '{"a":17, "b":4.5}' ->> '$.a';
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SELECT '{"a":17, "b":4.5}' ->> 'a';
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~~~
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Similarly, these queries mean exactly the same thing:
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> ~~~
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SELECT '[17,4.5,"hello",0]' ->> '$[1]';
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SELECT '[17,4.5,"hello",0]' ->> 1;
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~~~
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The abbreviated JSON path specs are allowed with the -> and ->> operators
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only. The json_extract() and json_nextract() functions, and all the other
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JSON functions, still use the full path spec and will raise an error if
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the full path spec is not provided.
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This enhancement provides compatibility with PG.
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PG does not support JSON path specs on its ->> operator. With PG, the
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right-hand side of ->> must be either an integer (if the left-hand side
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is a JSON array) or a text string which is interpreted as a field name
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(if the left-hand side is a JSON object). So the ->> operator in PG is
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rather limited. With this enhancement, the ->> operator in SQLite
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covers all the functionality of PG, plus a lot more.
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MySQL also supports the ->> operator, but it requires a full JSON path
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spec on the right-hand side. SQLite also supports this, so SQLite is
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compatibility with MySQL as well. Note, however, that MySQL and PG
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are incompatible with each other. You can (in theory) write SQL that
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uses the ->> operator that is compatible between SQLite and MySQL,
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or that is compatible between SQLite and PG, but not that is compatible
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with all three.
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## 4.0 New json_ntype() SQL function
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A new function "json_ntype(JSON)" works like the existing one-argument
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version of the "json_type(JSON)" function, except that json_ntype(JSON)
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returns NULL if the argument is not well-formed JSON, whereas the
|
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existing json_type() function raises an error in that case.
|
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|
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In other words, "`json_ntype($json)`" is equivalent to
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"`CASE WHEN json_valid($json) THEN json_type($json) END`".
|
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This function is seen as useful for figuring out which rows of a table
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have a JSON type in a column and which do not. For example, to find
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all rows in a table in which the value of the the "phonenumber" column
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contains a JSON array, you could write:
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> ~~~
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SELECT * FROM users WHERE json_ntype(phonenumber) IS 'array';
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~~~
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30
manifest
30
manifest
@@ -1,11 +1,11 @@
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C An\sattempt\sto\sintegrate\sthe\sJSON\sfunctions\sdirectly\sinto\sthe\sSQLite\score,\nrather\sthan\sholding\sthem\sas\san\sextension.
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D 2022-01-06T01:40:09.292
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C Merge\sthe\sJSON\sfunction\senhancements\sfrom\sthe\sjson-enhancements\sbranch\sinto\njson-in-core.
|
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D 2022-01-08T15:37:13.201
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F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
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F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
|
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F LICENSE.md df5091916dbb40e6e9686186587125e1b2ff51f022cc334e886c19a0e9982724
|
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F Makefile.in fd537743957bfe87997dc5727783d8eec82098921e15eab984d6711cd46f001b
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F Makefile.linux-gcc f609543700659711fbd230eced1f01353117621dccae7b9fb70daa64236c5241
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F Makefile.msc 8ba680ec26e6d6f348954e0fee719607688075ef6c242e50e20d28e8ded7cc08
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F Makefile.msc 22ce0007874c61c8eb51fc22b84f72af175ce2d7431c242253bdffa39c163da4
|
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F README.md 2dd87a5c1d108b224921f3dd47dea567973f706e1f6959386282a626f459a70c
|
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F VERSION 392c2f83569705069415a5d98b1c138ec8fe8a56a663a0d94cea019e806537b2
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F aclocal.m4 a5c22d164aff7ed549d53a90fa56d56955281f50
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@@ -15,7 +15,7 @@ F art/sqlite370.jpg d512473dae7e378a67e28ff96a34da7cb331def2
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F autoconf/INSTALL 83e4a25da9fd053c7b3665eaaaf7919707915903
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F autoconf/Makefile.am a8d1d24affe52ebf8d7ddcf91aa973fa0316618ab95bb68c87cabf8faf527dc8
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F autoconf/Makefile.fallback 22fe523eb36dfce31e0f6349f782eb084e86a5620b2b0b4f84a2d6133f53f5ac
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F autoconf/Makefile.msc d146a08ebbdf7f881ba600a49cd8dce40c4c807addcdb4b9b6a507e4b40ce837
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F autoconf/Makefile.msc 262dad10223b39a6853c4faefadb0f71931ca55c742fa285f8ee8d56b7543ddc
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F autoconf/README.first 6c4f34fe115ff55d4e8dbfa3cecf04a0188292f7
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F autoconf/configure.ac a8ba2a9e61216f5093d44f3b7d2cb8fe1890d6b7dc330a02f802d8efaa1fdc79
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@@ -38,6 +38,7 @@ F configure a2877fe63cc821af0df41abe70f1f7c4e97cb7e23a42e0a1402e8a2f55a88aa2 x
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F configure.ac 3ef6eeff4387585bfcab76b0c3f6e15a0618587bb90245dd5d44e4378141bb35
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F contrib/sqlitecon.tcl 210a913ad63f9f991070821e599d600bd913e0ad
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F doc/F2FS.txt c1d4a0ae9711cfe0e1d8b019d154f1c29e0d3abfe820787ba1e9ed7691160fcd
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F doc/json-enhancements.md b026346e18a18a90d84dbda457e3127282468ad26baaefc005a1656429fa4232
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F doc/lemon.html efc0cd2345d66905505d98f862e1c571512def0ceb5b016cb658fd4918eb76a3
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F doc/pager-invariants.txt 27fed9a70ddad2088750c4a2b493b63853da2710
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F doc/trusted-schema.md 33625008620e879c7bcfbbfa079587612c434fa094d338b08242288d358c3e8a
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@@ -494,7 +495,7 @@ F src/btree.c 0e9f84f974e970fb373c15caa1624a281b3c33098cb9dd9021d6801c04eb4fde
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F src/btree.h 74d64b8f28cfa4a894d14d4ed64fa432cd697b98b61708d4351482ae15913e22
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F src/btreeInt.h ee9348c4cb9077243b049edc93a82c1f32ca48baeabf2140d41362b9f9139ff7
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F src/build.c 6e16f7b539bfc55149a039bf0cda26b089640339df6147070b072df2d1c4f771
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F src/callback.c 106b585da1edd57d75fa579d823a5218e0bf37f191dbf7417eeb4a8a9a267dbc
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F src/callback.c 4c19af69835787bfe790ac560f3071a824eb629f34e41f97b52ce5235c77de1c
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F src/complete.c a3634ab1e687055cd002e11b8f43eb75c17da23e
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F src/ctime.c b09ce320b78718d5e0c4a7a59b8705abe8ee4683d9fa4b33768fe347e1b2a42a
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F src/date.c ab8e01d928f201f5dee0bc6d54d6702fdcec96dff4d58c387447671f6a46d191
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@@ -511,7 +512,7 @@ F src/hash.h 3340ab6e1d13e725571d7cee6d3e3135f0779a7d8e76a9ce0a85971fa3953c51
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F src/hwtime.h cb1d7e3e1ed94b7aa6fde95ae2c2daccc3df826be26fc9ed7fd90d1750ae6144
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F src/in-operator.md 10cd8f4bcd225a32518407c2fb2484089112fd71
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F src/insert.c e528416ff5d86fc5d656ea6a26f03fde39836b6175f93048c32a03cb2ee16743
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F src/json.c 973b36a733cc5d3c8347bbdb3479c1124c0916ee7416341d0126895d055d2447 w ext/misc/json1.c
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F src/json.c 726f1901ecc66bc359d785c268e70c2f10fcec22b212613b00d7da5aa561d462
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F src/legacy.c d7874bc885906868cd51e6c2156698f2754f02d9eee1bae2d687323c3ca8e5aa
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F src/loadext.c 95db1fe62c5973f1c5d9c53f6083e21a73ece14cdd47eeca0639691332e85c4d
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F src/main.c 2b6b0dbfeb14d4bb57e368604b0736b2aa42b51b00339d399b01d6b1fc9b4960
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@@ -539,7 +540,7 @@ F src/os_win.c 77d39873836f1831a9b0b91894fec45ab0e9ca8e067dc8c549e1d1eca1566fe9
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F src/os_win.h 7b073010f1451abe501be30d12f6bc599824944a
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F src/pager.c 55a9a8c745c47a49e6541b1d634f6152e3f72f76c6dbb04fe24413986a928091
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F src/pager.h 4bf9b3213a4b2bebbced5eaa8b219cf25d4a82f385d093cd64b7e93e5285f66f
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F src/parse.y 761b5d30a7ea9bd2db3b3571438cfcceb5f7dbf4fcad6881c8de65bdda07135a
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F src/parse.y 04f61db1cdd7036c6d74baad1c342d3e3110cb0765c48fcfd3bdf4e974a1e5bb
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F src/pcache.c 084e638432c610f95aea72b8509f0845d2791293f39d1b82f0c0a7e089c3bb6b
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F src/pcache.h 4f87acd914cef5016fae3030343540d75f5b85a1877eed1a2a19b9f284248586
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F src/pcache1.c 54881292a9a5db202b2c0ac541c5e3ef9a5e8c4f1c1383adb2601d5499a60e65
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@@ -614,7 +615,7 @@ F src/test_windirent.h 90dfbe95442c9762357fe128dc7ae3dc199d006de93eb33ba3972e0a9
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F src/test_window.c cdae419fdcea5bad6dcd9368c685abdad6deb59e9fc8b84b153de513d394ba3f
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F src/test_wsd.c 41cadfd9d97fe8e3e4e44f61a4a8ccd6f7ca8fe9
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F src/threads.c 4ae07fa022a3dc7c5beb373cf744a85d3c5c6c3c
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F src/tokenize.c dc5367c6d42336b35d55f96d2f04cd6256e92bc6ecf74ed5d855d24e43343aff
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F src/tokenize.c b74d878aa7c82ec8460779468061a96185e22257f68ab785b69abce354b70446
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F src/treeview.c 9dfdb7ff7f6645d0a6458dbdf4ffac041c071c4533a6db8bb6e502b979ac67bc
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F src/trigger.c 40e7c3dcff57a770d5fa38ba21ed4725572fd2e224c58af61eb980598b60f9c8
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F src/update.c d6f5c7b9e072660757ac7d58175aca11c07cb95ebbb297ae7f38853700f52328
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@@ -1045,7 +1046,7 @@ F test/fts4umlaut.test fcaca4471de7e78c9d1f7e8976e3e8704d7d8ad979d57a739d00f3f75
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F test/fts4unicode.test 82a9c16b68ba2f358a856226bb2ee02f81583797bc4744061c54401bf1a0f4c9
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F test/fts4upfrom.test f25835162c989dffd5e2ef91ec24c4848cc9973093e2d492d1c7b32afac1b49d
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F test/full.test 6b3c8fb43c6beab6b95438c1675374b95fab245d
|
||||
F test/func.test 3a65ddb6c1998f71aa86492501a6be87904197e62bfb5b70b2493552b558abd1
|
||||
F test/func.test 0a305e88a4fbdce6be8c6f4863d6dab9ecb2975b95e94734621e2c900779b712
|
||||
F test/func2.test 772d66227e4e6684b86053302e2d74a2500e1e0f
|
||||
F test/func3.test 600a632c305a88f3946d38f9a51efe145c989b2e13bd2b2a488db47fe76bab6a
|
||||
F test/func4.test 2285fb5792d593fef442358763f0fd9de806eda47dbc7a5934df57ffdc484c31
|
||||
@@ -1147,7 +1148,7 @@ F test/jrnlmode.test 9b5bc01dac22223cb60ec2d5f97acf568d73820794386de5634dcadbea9
|
||||
F test/jrnlmode2.test 8759a1d4657c064637f8b079592651530db738419e1d649c6df7048cd724363d
|
||||
F test/jrnlmode3.test 556b447a05be0e0963f4311e95ab1632b11c9eaa
|
||||
F test/json101.test bb71538005f2d9e18620bdd3b76839a93ca0be61903eb8d751a64e78cf99b8fb
|
||||
F test/json102.test eeb54efa221e50b74a2d6fb9259963b48d7414dca3ce2fdfdeed45cb28487bc1
|
||||
F test/json102.test a44a20b7dfa446e67f47d0c02927fe93f80d6ebf3080a5d827757e8d4921c081
|
||||
F test/json103.test aff6b7a4c17d5a20b487a7bc1a274bfdc63b829413bdfb83bedac42ec7f67e3b
|
||||
F test/json104.test 2cb7ff2cca2c8214d3e5260eeb9ce45faec0926f68b3e40c1aaa6ca247284144
|
||||
F test/json105.test 45f7d6a9a54c85f8a9589b68d3e7a1f42d02f2359911a8cdbad1f9988f571173
|
||||
@@ -1937,11 +1938,8 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
|
||||
F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
|
||||
F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
|
||||
F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
|
||||
P b6a82f3c3b9d89fdf628c7f117b6a4a64383a36c84fe84d47c80e845c9bd8a4f
|
||||
R 512e6db3c5e4ab4d0c8ece9f791ebefa
|
||||
T *branch * json-in-core
|
||||
T *sym-json-in-core *
|
||||
T -sym-trunk *
|
||||
P 583b47d865fb8d2c9ae4d3a4e70356a8a758978efb0a282f6b19775bf41fb748 4d81425e1bf2cff6fa961d0a7936b5f62d3f8ffe9bffea89c1e8b8ddf8fad6f4
|
||||
R 9de2cc0789b4af5e569fa6f6937afbf5
|
||||
U drh
|
||||
Z a41c104f7d21d7e5237fb8ae1a000e0b
|
||||
Z 5d4090391a2a7b92e27e5b55336ae1bf
|
||||
# Remove this line to create a well-formed Fossil manifest.
|
||||
|
||||
@@ -1 +1 @@
|
||||
583b47d865fb8d2c9ae4d3a4e70356a8a758978efb0a282f6b19775bf41fb748
|
||||
e116501c2f0e594eb7a3dd804daa943cc508f32ded3078aed21b695ec83bcd4c
|
||||
@@ -358,7 +358,6 @@ void sqlite3InsertBuiltinFuncs(
|
||||
const char *zName = aDef[i].zName;
|
||||
int nName = sqlite3Strlen30(zName);
|
||||
int h = SQLITE_FUNC_HASH(zName[0], nName);
|
||||
assert( zName[0]>='a' && zName[0]<='z' );
|
||||
assert( aDef[i].funcFlags & SQLITE_FUNC_BUILTIN );
|
||||
pOther = sqlite3FunctionSearch(h, zName);
|
||||
if( pOther ){
|
||||
|
||||
171
src/json.c
171
src/json.c
@@ -1502,13 +1502,44 @@ static void jsonArrayLengthFunc(
|
||||
sqlite3_result_int64(ctx, n);
|
||||
}
|
||||
|
||||
/*
|
||||
** Bit values for the flags passed into jsonExtractFunc() or
|
||||
** jsonSetFunc() via the user-data value.
|
||||
*/
|
||||
#define JSON_NULLERR 0x01 /* Return NULL if input is not JSON */
|
||||
#define JSON_ABPATH 0x02 /* Allow abbreviated JSON path specs */
|
||||
#define JSON_ISSET 0x04 /* json_set(), not json_insert() */
|
||||
|
||||
/*
|
||||
** json_extract(JSON, PATH, ...)
|
||||
** json_nextract(JSON, PATH, ...)
|
||||
** "->"(JSON,PATH)
|
||||
** "->>"(JSON,PATH)
|
||||
**
|
||||
** Return the element described by PATH. Return NULL if there is no
|
||||
** PATH element. If there are multiple PATHs, then return a JSON array
|
||||
** with the result from each path. Throw an error if the JSON or any PATH
|
||||
** is malformed.
|
||||
** Return the element described by PATH. Return NULL if that PATH element
|
||||
** is not found. For leaf nodes of the JSON, the value returned is a pure
|
||||
** SQL value. In other words, quotes have been removed from strings.
|
||||
**
|
||||
** If there are multiple PATHs, then the value returned is a JSON array
|
||||
** with one entry in the array for each PATH term.
|
||||
**
|
||||
** Throw an error if any PATH is malformed.
|
||||
**
|
||||
** If JSON is not well-formed JSON then:
|
||||
**
|
||||
** (1) raise an error if the JSON_NULLERR flag is not set.
|
||||
**
|
||||
** (2) Otherwise (if the JSON_NULLERR flags is set and) if there
|
||||
** is a single PATH argument with the value '$', simply quote
|
||||
** the JSON input as if by json_quote(). In other words, treat
|
||||
** the JSON input as a string and convert it into a valid JSON
|
||||
** string.
|
||||
**
|
||||
** (3) Otherwise (if JSON_NULLERR is set and the PATH is not '$')
|
||||
** return NULL
|
||||
**
|
||||
** If the JSON_ABPATH flag is set and there is only a single PATH, then
|
||||
** allow abbreviated PATH specs that omit the leading "$".
|
||||
*/
|
||||
static void jsonExtractFunc(
|
||||
sqlite3_context *ctx,
|
||||
@@ -1518,35 +1549,75 @@ static void jsonExtractFunc(
|
||||
JsonParse *p; /* The parse */
|
||||
JsonNode *pNode;
|
||||
const char *zPath;
|
||||
int flags = SQLITE_PTR_TO_INT(sqlite3_user_data(ctx));
|
||||
JsonString jx;
|
||||
int i;
|
||||
|
||||
if( argc<2 ) return;
|
||||
p = jsonParseCached(ctx, argv, ctx);
|
||||
if( p==0 ) return;
|
||||
jsonInit(&jx, ctx);
|
||||
jsonAppendChar(&jx, '[');
|
||||
for(i=1; i<argc; i++){
|
||||
zPath = (const char*)sqlite3_value_text(argv[i]);
|
||||
pNode = jsonLookup(p, zPath, 0, ctx);
|
||||
if( p->nErr ) break;
|
||||
if( argc>2 ){
|
||||
p = jsonParseCached(ctx, argv, (flags & JSON_NULLERR)!=0 ? 0 : ctx);
|
||||
if( p==0 ){
|
||||
/* If the form is "json_nextract(IN,'$')" and IN is not well-formed JSON,
|
||||
** then return IN as a quoted JSON string. */
|
||||
if( (flags & JSON_NULLERR)!=0
|
||||
&& argc==2
|
||||
&& (zPath = (const char*)sqlite3_value_text(argv[1]))!=0
|
||||
&& zPath[0]=='$' && zPath[1]==0
|
||||
){
|
||||
jsonQuoteFunc(ctx, argc, argv);
|
||||
}
|
||||
return;
|
||||
}
|
||||
if( argc==2 ){
|
||||
/* With a single PATH argument, the return is the unquoted SQL value */
|
||||
zPath = (const char*)sqlite3_value_text(argv[1]);
|
||||
if( zPath && zPath[0]!='$' && zPath[0]!=0 && (flags & JSON_ABPATH)!=0 ){
|
||||
/* The -> and ->> operators accept abbreviated PATH arguments. This
|
||||
** is mostly for compatibility with PostgreSQL, but also for convenience.
|
||||
**
|
||||
** NUMBER ==> $[NUMBER] // PG compatible
|
||||
** LABEL ==> $.LABEL // PG compatible
|
||||
** [NUMBER] ==> $[NUMBER] // Not PG. Purely for convenience
|
||||
*/
|
||||
jsonInit(&jx, ctx);
|
||||
if( sqlite3Isdigit(zPath[0]) ){
|
||||
jsonAppendRaw(&jx, "$[", 2);
|
||||
jsonAppendRaw(&jx, zPath, (int)strlen(zPath));
|
||||
jsonAppendRaw(&jx, "]", 2);
|
||||
}else{
|
||||
jsonAppendRaw(&jx, "$.", 1 + (zPath[0]!='['));
|
||||
jsonAppendRaw(&jx, zPath, (int)strlen(zPath));
|
||||
jsonAppendChar(&jx, 0);
|
||||
}
|
||||
pNode = jx.bErr ? 0 : jsonLookup(p, jx.zBuf, 0, ctx);
|
||||
jsonReset(&jx);
|
||||
}else{
|
||||
pNode = jsonLookup(p, zPath, 0, ctx);
|
||||
}
|
||||
if( p->nErr ) return;
|
||||
if( pNode ) jsonReturn(pNode, ctx, 0);
|
||||
}else{
|
||||
/* Two or more PATH arguments results in a JSON array with each
|
||||
** element of the array being the value selected by one of the PATHs */
|
||||
int i;
|
||||
jsonInit(&jx, ctx);
|
||||
jsonAppendChar(&jx, '[');
|
||||
for(i=1; i<argc; i++){
|
||||
zPath = (const char*)sqlite3_value_text(argv[i]);
|
||||
pNode = jsonLookup(p, zPath, 0, ctx);
|
||||
if( p->nErr ) break;
|
||||
jsonAppendSeparator(&jx);
|
||||
if( pNode ){
|
||||
jsonRenderNode(pNode, &jx, 0);
|
||||
}else{
|
||||
jsonAppendRaw(&jx, "null", 4);
|
||||
}
|
||||
}else if( pNode ){
|
||||
jsonReturn(pNode, ctx, 0);
|
||||
}
|
||||
if( i==argc ){
|
||||
jsonAppendChar(&jx, ']');
|
||||
jsonResult(&jx);
|
||||
sqlite3_result_subtype(ctx, JSON_SUBTYPE);
|
||||
}
|
||||
jsonReset(&jx);
|
||||
}
|
||||
if( argc>2 && i==argc ){
|
||||
jsonAppendChar(&jx, ']');
|
||||
jsonResult(&jx);
|
||||
sqlite3_result_subtype(ctx, JSON_SUBTYPE);
|
||||
}
|
||||
jsonReset(&jx);
|
||||
}
|
||||
|
||||
/* This is the RFC 7396 MergePatch algorithm.
|
||||
@@ -1779,6 +1850,7 @@ replace_err:
|
||||
jsonParseReset(&x);
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** json_set(JSON, PATH, VALUE, ...)
|
||||
**
|
||||
@@ -1839,10 +1911,13 @@ jsonSetDone:
|
||||
|
||||
/*
|
||||
** json_type(JSON)
|
||||
** json_ntype(JSON)
|
||||
** json_type(JSON, PATH)
|
||||
**
|
||||
** Return the top-level "type" of a JSON string. Throw an error if
|
||||
** either the JSON or PATH inputs are not well-formed.
|
||||
** Return the top-level "type" of a JSON string. json_type() raises an
|
||||
** error if either the JSON or PATH inputs are not well-formed. json_ntype()
|
||||
** works like the one-argument version of json_type() except that it
|
||||
** returns NULL if the JSON argument is not well-formed.
|
||||
*/
|
||||
static void jsonTypeFunc(
|
||||
sqlite3_context *ctx,
|
||||
@@ -1853,7 +1928,7 @@ static void jsonTypeFunc(
|
||||
const char *zPath;
|
||||
JsonNode *pNode;
|
||||
|
||||
p = jsonParseCached(ctx, argv, ctx);
|
||||
p = jsonParseCached(ctx, argv, sqlite3_user_data(ctx)!=0 ? 0 : ctx);
|
||||
if( p==0 ) return;
|
||||
if( argc==2 ){
|
||||
zPath = (const char*)sqlite3_value_text(argv[1]);
|
||||
@@ -2557,29 +2632,33 @@ static sqlite3_module jsonTreeModule = {
|
||||
void sqlite3RegisterJsonFunctions(void){
|
||||
#ifndef SQLITE_OMIT_JSON
|
||||
static FuncDef aJsonFunc[] = {
|
||||
JFUNCTION(json, 1, 0, jsonRemoveFunc),
|
||||
JFUNCTION(json_array, -1, 0, jsonArrayFunc),
|
||||
JFUNCTION(json_array_length, 1, 0, jsonArrayLengthFunc),
|
||||
JFUNCTION(json_array_length, 2, 0, jsonArrayLengthFunc),
|
||||
JFUNCTION(json_extract, -1, 0, jsonExtractFunc),
|
||||
JFUNCTION(json_insert, -1, 0, jsonSetFunc),
|
||||
JFUNCTION(json_object, -1, 0, jsonObjectFunc),
|
||||
JFUNCTION(json_patch, 2, 0, jsonPatchFunc),
|
||||
JFUNCTION(json_quote, 1, 0, jsonQuoteFunc),
|
||||
JFUNCTION(json_remove, -1, 0, jsonRemoveFunc),
|
||||
JFUNCTION(json_replace, -1, 0, jsonReplaceFunc),
|
||||
JFUNCTION(json_set, -1, 1, jsonSetFunc),
|
||||
JFUNCTION(json_type, 1, 0, jsonTypeFunc),
|
||||
JFUNCTION(json_type, 2, 0, jsonTypeFunc),
|
||||
JFUNCTION(json_valid, 1, 0, jsonValidFunc),
|
||||
JFUNCTION(json, 1, 0, jsonRemoveFunc),
|
||||
JFUNCTION(json_array, -1, 0, jsonArrayFunc),
|
||||
JFUNCTION(json_array_length, 1, 0, jsonArrayLengthFunc),
|
||||
JFUNCTION(json_array_length, 2, 0, jsonArrayLengthFunc),
|
||||
JFUNCTION(json_extract, -1, 0, jsonExtractFunc),
|
||||
JFUNCTION(json_nextract, -1, JSON_NULLERR, jsonExtractFunc),
|
||||
JFUNCTION(->, 2, JSON_NULLERR|JSON_ABPATH, jsonExtractFunc),
|
||||
JFUNCTION(->>, 2, JSON_ABPATH, jsonExtractFunc),
|
||||
JFUNCTION(json_insert, -1, 0, jsonSetFunc),
|
||||
JFUNCTION(json_ntype, 1, JSON_NULLERR, jsonTypeFunc),
|
||||
JFUNCTION(json_object, -1, 0, jsonObjectFunc),
|
||||
JFUNCTION(json_patch, 2, 0, jsonPatchFunc),
|
||||
JFUNCTION(json_quote, 1, 0, jsonQuoteFunc),
|
||||
JFUNCTION(json_remove, -1, 0, jsonRemoveFunc),
|
||||
JFUNCTION(json_replace, -1, 0, jsonReplaceFunc),
|
||||
JFUNCTION(json_set, -1, JSON_ISSET, jsonSetFunc),
|
||||
JFUNCTION(json_type, 1, 0, jsonTypeFunc),
|
||||
JFUNCTION(json_type, 2, 0, jsonTypeFunc),
|
||||
JFUNCTION(json_valid, 1, 0, jsonValidFunc),
|
||||
#if SQLITE_DEBUG
|
||||
JFUNCTION(json_parse, 1, 0, jsonParseFunc),
|
||||
JFUNCTION(json_test1, 1, 0, jsonTest1Func),
|
||||
JFUNCTION(json_parse, 1, 0, jsonParseFunc),
|
||||
JFUNCTION(json_test1, 1, 0, jsonTest1Func),
|
||||
#endif
|
||||
WAGGREGATE(json_group_array, 1, 0, 0,
|
||||
WAGGREGATE(json_group_array, 1, 0, 0,
|
||||
jsonArrayStep, jsonArrayFinal, jsonArrayValue, jsonGroupInverse,
|
||||
SQLITE_SUBTYPE|SQLITE_UTF8|SQLITE_DETERMINISTIC|SQLITE_INNOCUOUS),
|
||||
WAGGREGATE(json_group_object, 2, 0, 0,
|
||||
WAGGREGATE(json_group_object, 2, 0, 0,
|
||||
jsonObjectStep, jsonObjectFinal, jsonObjectValue, jsonGroupInverse,
|
||||
SQLITE_SUBTYPE|SQLITE_UTF8|SQLITE_DETERMINISTIC|SQLITE_INNOCUOUS)
|
||||
};
|
||||
@@ -2594,8 +2673,8 @@ void sqlite3RegisterJsonFunctions(void){
|
||||
int sqlite3JsonTableFunctions(sqlite3 *db){
|
||||
int rc = SQLITE_OK;
|
||||
static const struct {
|
||||
const char *zName;
|
||||
sqlite3_module *pModule;
|
||||
const char *zName;
|
||||
sqlite3_module *pModule;
|
||||
} aMod[] = {
|
||||
{ "json_each", &jsonEachModule },
|
||||
{ "json_tree", &jsonTreeModule },
|
||||
|
||||
10
src/parse.y
10
src/parse.y
@@ -236,7 +236,7 @@ columnname(A) ::= nm(A) typetoken(Y). {sqlite3AddColumn(pParse,A,Y);}
|
||||
//
|
||||
%token ABORT ACTION AFTER ANALYZE ASC ATTACH BEFORE BEGIN BY CASCADE CAST.
|
||||
%token CONFLICT DATABASE DEFERRED DESC DETACH EACH END EXCLUSIVE EXPLAIN FAIL.
|
||||
%token OR AND NOT MATCH LIKE_KW BETWEEN IS IN ISNULL NOTNULL NE EQ.
|
||||
%token OR AND NOT IS MATCH LIKE_KW BETWEEN IN ISNULL NOTNULL NE EQ.
|
||||
%token GT LE LT GE ESCAPE.
|
||||
|
||||
// The following directive causes tokens ABORT, AFTER, ASC, etc. to
|
||||
@@ -286,7 +286,7 @@ columnname(A) ::= nm(A) typetoken(Y). {sqlite3AddColumn(pParse,A,Y);}
|
||||
%left BITAND BITOR LSHIFT RSHIFT.
|
||||
%left PLUS MINUS.
|
||||
%left STAR SLASH REM.
|
||||
%left CONCAT.
|
||||
%left CONCAT PTR.
|
||||
%left COLLATE.
|
||||
%right BITNOT.
|
||||
%nonassoc ON.
|
||||
@@ -1235,6 +1235,12 @@ expr(A) ::= PLUS|MINUS(B) expr(X). [BITNOT] {
|
||||
/*A-overwrites-B*/
|
||||
}
|
||||
|
||||
expr(A) ::= expr(B) PTR(C) expr(D). {
|
||||
ExprList *pList = sqlite3ExprListAppend(pParse, 0, B);
|
||||
pList = sqlite3ExprListAppend(pParse, pList, D);
|
||||
A = sqlite3ExprFunction(pParse, pList, &C, 0);
|
||||
}
|
||||
|
||||
%type between_op {int}
|
||||
between_op(A) ::= BETWEEN. {A = 0;}
|
||||
between_op(A) ::= NOT BETWEEN. {A = 1;}
|
||||
|
||||
@@ -290,6 +290,9 @@ int sqlite3GetToken(const unsigned char *z, int *tokenType){
|
||||
for(i=2; (c=z[i])!=0 && c!='\n'; i++){}
|
||||
*tokenType = TK_SPACE; /* IMP: R-22934-25134 */
|
||||
return i;
|
||||
}else if( z[1]=='>' ){
|
||||
*tokenType = TK_PTR;
|
||||
return 2 + (z[2]=='>');
|
||||
}
|
||||
*tokenType = TK_MINUS;
|
||||
return 1;
|
||||
|
||||
@@ -1507,4 +1507,19 @@ do_execsql_test func-35.200 {
|
||||
PRAGMA integrity_check;
|
||||
} {ok}
|
||||
|
||||
# 2021-01-07: The -> and ->> operators.
|
||||
#
|
||||
proc ptr1 {a b} { return "$a->$b" }
|
||||
db func -> ptr1
|
||||
proc ptr2 {a b} { return "$a->>$b" }
|
||||
db func ->> ptr2
|
||||
do_execsql_test func-36.100 {
|
||||
SELECT 123 -> 456
|
||||
} {123->456}
|
||||
do_execsql_test func-36.110 {
|
||||
SELECT 123 ->> 456
|
||||
} {123->>456}
|
||||
|
||||
|
||||
|
||||
finish_test
|
||||
|
||||
@@ -71,21 +71,70 @@ do_execsql_test json102-240 {
|
||||
do_execsql_test json102-250 {
|
||||
SELECT json_extract('{"a":2,"c":[4,5,{"f":7}]}', '$');
|
||||
} {{{"a":2,"c":[4,5,{"f":7}]}}}
|
||||
do_execsql_test json102-251 {
|
||||
SELECT json_nextract('{"a":2,"c":[4,5,{"f":7}]}', '$');
|
||||
} {{{"a":2,"c":[4,5,{"f":7}]}}}
|
||||
do_execsql_test json102-252 {
|
||||
SELECT '{"a":2,"c":[4,5,{"f":7}]}' -> '$';
|
||||
} {{{"a":2,"c":[4,5,{"f":7}]}}}
|
||||
do_execsql_test json102-260 {
|
||||
SELECT json_extract('{"a":2,"c":[4,5,{"f":7}]}', '$.c');
|
||||
} {{[4,5,{"f":7}]}}
|
||||
do_execsql_test json102-261 {
|
||||
SELECT '{"a":2,"c":[4,5,{"f":7}]}' -> '$.c';
|
||||
} {{[4,5,{"f":7}]}}
|
||||
do_execsql_test json102-262 {
|
||||
SELECT '{"a":2,"c":[4,5,{"f":7}]}' -> 'c';
|
||||
} {{[4,5,{"f":7}]}}
|
||||
do_catchsql_test json102-265 {
|
||||
SELECT json_extract('[1,2,3', '$[2]');
|
||||
} {1 {malformed JSON}}
|
||||
do_catchsql_test json102-266 {
|
||||
SELECT json_nextract('[1,2,3', '$[2]');
|
||||
} {0 {{}}}
|
||||
do_catchsql_test json102-267 {
|
||||
SELECT json_extract('[1,2,3', '$');
|
||||
} {1 {malformed JSON}}
|
||||
do_catchsql_test json102-268 {
|
||||
SELECT json_nextract('[1,2,3', '$');
|
||||
} {0 {{"[1,2,3"}}}
|
||||
do_catchsql_test json102-269a {
|
||||
SELECT '[1,2,3' ->> '$';
|
||||
} {1 {malformed JSON}}
|
||||
do_catchsql_test json102-269b {
|
||||
SELECT '[1,2,3' -> '$';
|
||||
} {0 {{"[1,2,3"}}}
|
||||
|
||||
do_execsql_test json102-270 {
|
||||
SELECT json_extract('{"a":2,"c":[4,5,{"f":7}]}', '$.c[2]');
|
||||
} {{{"f":7}}}
|
||||
do_execsql_test json102-271 {
|
||||
SELECT '{"a":2,"c":[4,5,{"f":7}]}' -> '$.c[2]';
|
||||
} {{{"f":7}}}
|
||||
do_execsql_test json102-272 {
|
||||
SELECT '{"a":2,"c":[4,5,{"f":7}]}' -> 'c' -> 2;
|
||||
} {{{"f":7}}}
|
||||
do_execsql_test json102-280 {
|
||||
SELECT json_extract('{"a":2,"c":[4,5,{"f":7}]}', '$.c[2].f');
|
||||
} {{7}}
|
||||
do_execsql_test json102-281 {
|
||||
SELECT '{"a":2,"c":[4,5,{"f":7}]}' -> 'c' -> 2 -> 'f';
|
||||
} {{7}}
|
||||
do_execsql_test json102-282 {
|
||||
SELECT '{"a":2,"c":[4,5,{"f":7}]}' -> 'c' -> '[2]' -> 'f';
|
||||
} {{7}}
|
||||
do_execsql_test json102-290 {
|
||||
SELECT json_extract('{"a":2,"c":[4,5],"f":7}','$.c','$.a');
|
||||
} {{[[4,5],2]}}
|
||||
do_execsql_test json102-300 {
|
||||
SELECT json_extract('{"a":2,"c":[4,5,{"f":7}]}', '$.x');
|
||||
} {{}}
|
||||
do_execsql_test json102-301 {
|
||||
SELECT '{"a":2,"c":[4,5,{"f":7}]}' -> 'x';
|
||||
} {{}}
|
||||
do_execsql_test json102-302 {
|
||||
SELECT '{"a":2,"c":[4,5,{"f":7}]}' -> NULL;
|
||||
} {{}}
|
||||
do_execsql_test json102-310 {
|
||||
SELECT json_extract('{"a":2,"c":[4,5,{"f":7}]}', '$.x', '$.a');
|
||||
} {{[null,2]}}
|
||||
@@ -149,6 +198,9 @@ do_execsql_test json102-500 {
|
||||
do_execsql_test json102-510 {
|
||||
SELECT json_type('{"a":[2,3.5,true,false,null,"x"]}');
|
||||
} {{object}}
|
||||
do_execsql_test json102-511 {
|
||||
SELECT json_ntype('{"a":[2,3.5,true,false,null,"x"]}');
|
||||
} {{object}}
|
||||
do_execsql_test json102-520 {
|
||||
SELECT json_type('{"a":[2,3.5,true,false,null,"x"]}','$');
|
||||
} {{object}}
|
||||
@@ -182,6 +234,12 @@ do_execsql_test json102-610 {
|
||||
do_execsql_test json102-620 {
|
||||
SELECT json_valid(char(123)||'"x":35');
|
||||
} {{0}}
|
||||
do_catchsql_test json102-630 {
|
||||
SELECT json_type('["a",');
|
||||
} {1 {malformed JSON}}
|
||||
do_catchsql_test json102-631 {
|
||||
SELECT json_ntype('["a",');
|
||||
} {0 {{}}}
|
||||
|
||||
ifcapable vtab {
|
||||
do_execsql_test json102-1000 {
|
||||
|
||||
Reference in New Issue
Block a user