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489ad44ab5
The code to get read the value of a system variable was extracting its value on PREPARE stage and was substituting the value (as a constant) into the parse tree. Note that this must be a reversible transformation, i.e. it must be reversed before each re-execution. Unfortunately this cannot be reliably done using the current code, because there are other non-reversible source tree transformations that can interfere with this reversible transformation. Fixed by not resolving the value at PREPARE, but at EXECUTE (as the rest of the functions operate). Added a cache of the value (so that it's constant throughout the execution of the query). Note that the cache also caches NULL values. Updated an obsolete related test suite (variables-big) and the code to test the result type of system variables (as per bug 74).
54 lines
1.6 KiB
Plaintext
54 lines
1.6 KiB
Plaintext
'#---------------------BS_STVARS_048_01----------------------#'
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SELECT COUNT(@@GLOBAL.ssl_cipher);
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COUNT(@@GLOBAL.ssl_cipher)
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1
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1 Expected
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'#---------------------BS_STVARS_048_02----------------------#'
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SET @@GLOBAL.ssl_cipher=1;
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ERROR HY000: Variable 'ssl_cipher' is a read only variable
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Expected error 'Read only variable'
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SELECT COUNT(@@GLOBAL.ssl_cipher);
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COUNT(@@GLOBAL.ssl_cipher)
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1
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1 Expected
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'#---------------------BS_STVARS_048_03----------------------#'
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SELECT @@GLOBAL.ssl_cipher = VARIABLE_VALUE
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FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES
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WHERE VARIABLE_NAME='ssl_cipher';
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@@GLOBAL.ssl_cipher = VARIABLE_VALUE
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NULL
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1 Expected
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SELECT COUNT(@@GLOBAL.ssl_cipher);
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COUNT(@@GLOBAL.ssl_cipher)
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1
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1 Expected
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SELECT COUNT(VARIABLE_VALUE)
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FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES
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WHERE VARIABLE_NAME='ssl_cipher';
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COUNT(VARIABLE_VALUE)
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1
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1 Expected
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'#---------------------BS_STVARS_048_04----------------------#'
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SELECT @@ssl_cipher = @@GLOBAL.ssl_cipher;
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@@ssl_cipher = @@GLOBAL.ssl_cipher
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NULL
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1 Expected
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'#---------------------BS_STVARS_048_05----------------------#'
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SELECT COUNT(@@ssl_cipher);
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COUNT(@@ssl_cipher)
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1
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1 Expected
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SELECT COUNT(@@local.ssl_cipher);
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ERROR HY000: Variable 'ssl_cipher' is a GLOBAL variable
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Expected error 'Variable is a GLOBAL variable'
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SELECT COUNT(@@SESSION.ssl_cipher);
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ERROR HY000: Variable 'ssl_cipher' is a GLOBAL variable
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Expected error 'Variable is a GLOBAL variable'
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SELECT COUNT(@@GLOBAL.ssl_cipher);
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COUNT(@@GLOBAL.ssl_cipher)
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1
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1 Expected
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SELECT ssl_cipher = @@SESSION.ssl_cipher;
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ERROR 42S22: Unknown column 'ssl_cipher' in 'field list'
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Expected error 'Readonly variable'
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