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6ee30209a6
This patch introduces the SQL standard IS JSON predicate. It operates on text and bytea values representing JSON, as well as on the json and jsonb types. Each test has IS and IS NOT variants and supports a WITH UNIQUE KEYS flag. The tests are: IS JSON [VALUE] IS JSON ARRAY IS JSON OBJECT IS JSON SCALAR These should be self-explanatory. The WITH UNIQUE KEYS flag makes these return false when duplicate keys exist in any object within the value, not necessarily directly contained in the outermost object. Author: Nikita Glukhov <n.gluhov@postgrespro.ru> Author: Teodor Sigaev <teodor@sigaev.ru> Author: Oleg Bartunov <obartunov@gmail.com> Author: Alexander Korotkov <aekorotkov@gmail.com> Author: Amit Langote <amitlangote09@gmail.com> Author: Andrew Dunstan <andrew@dunslane.net> Reviewers have included (in no particular order) Andres Freund, Alexander Korotkov, Pavel Stehule, Andrew Alsup, Erik Rijkers, Zihong Yu, Himanshu Upadhyaya, Daniel Gustafsson, Justin Pryzby. Discussion: https://postgr.es/m/CAF4Au4w2x-5LTnN_bxky-mq4=WOqsGsxSpENCzHRAzSnEd8+WQ@mail.gmail.com Discussion: https://postgr.es/m/cd0bb935-0158-78a7-08b5-904886deac4b@postgrespro.ru Discussion: https://postgr.es/m/20220616233130.rparivafipt6doj3@alap3.anarazel.de Discussion: https://postgr.es/m/abd9b83b-aa66-f230-3d6d-734817f0995d%40postgresql.org
233 lines
6.2 KiB
C
233 lines
6.2 KiB
C
/* Processed by ecpg (regression mode) */
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/* These include files are added by the preprocessor */
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#include <ecpglib.h>
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#include <ecpgerrno.h>
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#include <sqlca.h>
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/* End of automatic include section */
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#define ECPGdebug(X,Y) ECPGdebug((X)+100,(Y))
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#line 1 "sqljson.pgc"
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#include <stdio.h>
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#line 1 "sqlca.h"
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#ifndef POSTGRES_SQLCA_H
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#define POSTGRES_SQLCA_H
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#ifndef PGDLLIMPORT
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#if defined(WIN32) || defined(__CYGWIN__)
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#define PGDLLIMPORT __declspec (dllimport)
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#else
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#define PGDLLIMPORT
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#endif /* __CYGWIN__ */
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#endif /* PGDLLIMPORT */
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#define SQLERRMC_LEN 150
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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struct sqlca_t
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{
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char sqlcaid[8];
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long sqlabc;
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long sqlcode;
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struct
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{
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int sqlerrml;
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char sqlerrmc[SQLERRMC_LEN];
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} sqlerrm;
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char sqlerrp[8];
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long sqlerrd[6];
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/* Element 0: empty */
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/* 1: OID of processed tuple if applicable */
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/* 2: number of rows processed */
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/* after an INSERT, UPDATE or */
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/* DELETE statement */
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/* 3: empty */
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/* 4: empty */
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/* 5: empty */
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char sqlwarn[8];
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/* Element 0: set to 'W' if at least one other is 'W' */
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/* 1: if 'W' at least one character string */
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/* value was truncated when it was */
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/* stored into a host variable. */
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/*
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* 2: if 'W' a (hopefully) non-fatal notice occurred
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*/ /* 3: empty */
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/* 4: empty */
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/* 5: empty */
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/* 6: empty */
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/* 7: empty */
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char sqlstate[5];
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};
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struct sqlca_t *ECPGget_sqlca(void);
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#ifndef POSTGRES_ECPG_INTERNAL
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#define sqlca (*ECPGget_sqlca())
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif
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#line 3 "sqljson.pgc"
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#line 1 "regression.h"
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#line 4 "sqljson.pgc"
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/* exec sql whenever sqlerror sqlprint ; */
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#line 6 "sqljson.pgc"
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int
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main ()
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{
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/* exec sql begin declare section */
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#line 12 "sqljson.pgc"
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char json [ 1024 ] ;
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#line 13 "sqljson.pgc"
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bool is_json [ 8 ] ;
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/* exec sql end declare section */
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#line 14 "sqljson.pgc"
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ECPGdebug (1, stderr);
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{ ECPGconnect(__LINE__, 0, "ecpg1_regression" , NULL, NULL , NULL, 0);
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#line 18 "sqljson.pgc"
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if (sqlca.sqlcode < 0) sqlprint();}
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#line 18 "sqljson.pgc"
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{ ECPGsetcommit(__LINE__, "on", NULL);
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#line 19 "sqljson.pgc"
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if (sqlca.sqlcode < 0) sqlprint();}
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#line 19 "sqljson.pgc"
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{ ECPGdo(__LINE__, 0, 1, NULL, 0, ECPGst_normal, "select json_object ( returning text )", ECPGt_EOIT,
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ECPGt_char,(json),(long)1024,(long)1,(1024)*sizeof(char),
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ECPGt_NO_INDICATOR, NULL , 0L, 0L, 0L, ECPGt_EORT);
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#line 21 "sqljson.pgc"
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if (sqlca.sqlcode < 0) sqlprint();}
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#line 21 "sqljson.pgc"
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printf("Found json=%s\n", json);
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{ ECPGdo(__LINE__, 0, 1, NULL, 0, ECPGst_normal, "select json_object ( returning text format json )", ECPGt_EOIT,
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ECPGt_char,(json),(long)1024,(long)1,(1024)*sizeof(char),
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ECPGt_NO_INDICATOR, NULL , 0L, 0L, 0L, ECPGt_EORT);
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#line 24 "sqljson.pgc"
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if (sqlca.sqlcode < 0) sqlprint();}
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#line 24 "sqljson.pgc"
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printf("Found json=%s\n", json);
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{ ECPGdo(__LINE__, 0, 1, NULL, 0, ECPGst_normal, "select json_array ( returning jsonb )", ECPGt_EOIT,
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ECPGt_char,(json),(long)1024,(long)1,(1024)*sizeof(char),
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ECPGt_NO_INDICATOR, NULL , 0L, 0L, 0L, ECPGt_EORT);
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#line 27 "sqljson.pgc"
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if (sqlca.sqlcode < 0) sqlprint();}
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#line 27 "sqljson.pgc"
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printf("Found json=%s\n", json);
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{ ECPGdo(__LINE__, 0, 1, NULL, 0, ECPGst_normal, "select json_array ( returning jsonb format json )", ECPGt_EOIT,
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ECPGt_char,(json),(long)1024,(long)1,(1024)*sizeof(char),
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ECPGt_NO_INDICATOR, NULL , 0L, 0L, 0L, ECPGt_EORT);
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#line 30 "sqljson.pgc"
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if (sqlca.sqlcode < 0) sqlprint();}
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#line 30 "sqljson.pgc"
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printf("Found json=%s\n", json);
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{ ECPGdo(__LINE__, 0, 1, NULL, 0, ECPGst_normal, "select json_object ( 1 : 1 , '1' : null with unique )", ECPGt_EOIT,
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ECPGt_char,(json),(long)1024,(long)1,(1024)*sizeof(char),
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ECPGt_NO_INDICATOR, NULL , 0L, 0L, 0L, ECPGt_EORT);
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#line 33 "sqljson.pgc"
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if (sqlca.sqlcode < 0) sqlprint();}
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#line 33 "sqljson.pgc"
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// error
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{ ECPGdo(__LINE__, 0, 1, NULL, 0, ECPGst_normal, "select json_object ( 1 : 1 , '2' : null , 1 : '2' absent on null without unique keys )", ECPGt_EOIT,
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ECPGt_char,(json),(long)1024,(long)1,(1024)*sizeof(char),
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ECPGt_NO_INDICATOR, NULL , 0L, 0L, 0L, ECPGt_EORT);
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#line 36 "sqljson.pgc"
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if (sqlca.sqlcode < 0) sqlprint();}
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#line 36 "sqljson.pgc"
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printf("Found json=%s\n", json);
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{ ECPGdo(__LINE__, 0, 1, NULL, 0, ECPGst_normal, "select json_object ( 1 : 1 , '2' : null absent on null without unique returning jsonb )", ECPGt_EOIT,
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ECPGt_char,(json),(long)1024,(long)1,(1024)*sizeof(char),
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ECPGt_NO_INDICATOR, NULL , 0L, 0L, 0L, ECPGt_EORT);
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#line 39 "sqljson.pgc"
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if (sqlca.sqlcode < 0) sqlprint();}
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#line 39 "sqljson.pgc"
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printf("Found json=%s\n", json);
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{ ECPGdo(__LINE__, 0, 1, NULL, 0, ECPGst_normal, "with val ( js ) as ( values ( '{ \"a\": 1, \"b\": [{ \"a\": 1, \"b\": 0, \"a\": 2 }] }' ) ) select js is json \"IS JSON\" , js is not json \"IS NOT JSON\" , js is json value \"IS VALUE\" , js is json object \"IS OBJECT\" , js is json array \"IS ARRAY\" , js is json scalar \"IS SCALAR\" , js is json without unique keys \"WITHOUT UNIQUE\" , js is json with unique keys \"WITH UNIQUE\" from val", ECPGt_EOIT,
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ECPGt_bool,&(is_json[0]),(long)1,(long)1,sizeof(bool),
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ECPGt_NO_INDICATOR, NULL , 0L, 0L, 0L,
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ECPGt_bool,&(is_json[1]),(long)1,(long)1,sizeof(bool),
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ECPGt_NO_INDICATOR, NULL , 0L, 0L, 0L,
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ECPGt_bool,&(is_json[2]),(long)1,(long)1,sizeof(bool),
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ECPGt_NO_INDICATOR, NULL , 0L, 0L, 0L,
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ECPGt_bool,&(is_json[3]),(long)1,(long)1,sizeof(bool),
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ECPGt_NO_INDICATOR, NULL , 0L, 0L, 0L,
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ECPGt_bool,&(is_json[4]),(long)1,(long)1,sizeof(bool),
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ECPGt_NO_INDICATOR, NULL , 0L, 0L, 0L,
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ECPGt_bool,&(is_json[5]),(long)1,(long)1,sizeof(bool),
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ECPGt_NO_INDICATOR, NULL , 0L, 0L, 0L,
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ECPGt_bool,&(is_json[6]),(long)1,(long)1,sizeof(bool),
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ECPGt_NO_INDICATOR, NULL , 0L, 0L, 0L,
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ECPGt_bool,&(is_json[7]),(long)1,(long)1,sizeof(bool),
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ECPGt_NO_INDICATOR, NULL , 0L, 0L, 0L, ECPGt_EORT);
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#line 54 "sqljson.pgc"
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if (sqlca.sqlcode < 0) sqlprint();}
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#line 54 "sqljson.pgc"
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for (int i = 0; i < sizeof(is_json); i++)
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printf("Found is_json[%d]: %s\n", i, is_json[i] ? "true" : "false");
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{ ECPGdisconnect(__LINE__, "CURRENT");
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#line 58 "sqljson.pgc"
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if (sqlca.sqlcode < 0) sqlprint();}
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#line 58 "sqljson.pgc"
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return 0;
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}
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