MySQL :: MySQL 8.0 Reference Manual

Search Results

Displaying 191 to 200 of 204 total results

https://dev.mysql.com/doc/refman/8.0/en/string-functions.html

If the input is a nonbinary (character) string such as a CHAR, VARCHAR, or TEXT value, the return value contains the collation weights for the string. For functions that operate on string positions, the first position is numbered 1. For functions ...

13.3 String Data Types

https://dev.mysql.com/doc/refman/8.0/en/string-types.html

The string data types are CHAR, VARCHAR, BINARY, VARBINARY, BLOB, TEXT, ENUM, and SET. For information about storage requirements of the string data types, see Section 13.7, “Data Type Storage Requirements”. For descriptions of functions that ...

30.4.5.10 The ps_is_consumer_enabled() Function

https://dev.mysql.com/doc/refman/8.0/en/sys-ps-is-consumer-enabled.html

Returns YES or NO to indicate whether a given Performance Schema consumer is enabled, or NULL if the argument is NULL. If the argument is not a valid consumer name, an error occurs. (Prior to MySQL 8.0.18, the function returns NULL if the argument ...

30.4.5.11 The ps_is_instrument_default_enabled() Function

https://dev.mysql.com/doc/refman/8.0/en/sys-ps-is-instrument-default-enabled.html

Returns YES or NO to indicate whether a given Performance Schema instrument is enabled by default. Example mysql> SELECT sys.ps_is_instrument_default_enabled('memory/innodb/row_log_buf'); ...

30.4.5.12 The ps_is_instrument_default_timed() Function

https://dev.mysql.com/doc/refman/8.0/en/sys-ps-is-instrument-default-timed.html

Returns YES or NO to indicate whether a given Performance Schema instrument is timed by default. Example mysql> SELECT sys.ps_is_instrument_default_timed('memory/innodb/row_log_buf'); ...

30.4.4.5 The ps_setup_disable_consumer() Procedure

https://dev.mysql.com/doc/refman/8.0/en/sys-ps-setup-disable-consumer.html

Parameters consumer VARCHAR(128): The value used to match consumer names, which are identified by using %consumer% as an operand for a LIKE pattern match. Disables Performance Schema consumers with names that contain the argument. Example Disable ...

30.4.4.6 The ps_setup_disable_instrument() Procedure

https://dev.mysql.com/doc/refman/8.0/en/sys-ps-setup-disable-instrument.html

Parameters in_pattern VARCHAR(128): The value used to match instrument names, which are identified by using %in_pattern% as an operand for a LIKE pattern match. Disables Performance Schema instruments with names that contain the argument. Example ...

30.4.4.9 The ps_setup_enable_consumer() Procedure

https://dev.mysql.com/doc/refman/8.0/en/sys-ps-setup-enable-consumer.html

Parameters consumer VARCHAR(128): The value used to match consumer names, which are identified by using %consumer% as an operand for a LIKE pattern match. Enables Performance Schema consumers with names that contain the argument. Example Enable all ...

30.4.4.10 The ps_setup_enable_instrument() Procedure

https://dev.mysql.com/doc/refman/8.0/en/sys-ps-setup-enable-instrument.html

Parameters in_pattern VARCHAR(128): The value used to match instrument names, which are identified by using %in_pattern% as an operand for a LIKE pattern match. Enables Performance Schema instruments with names that contain the argument. Example ...

30.4.4.22 The ps_trace_statement_digest() Procedure

https://dev.mysql.com/doc/refman/8.0/en/sys-ps-trace-statement-digest.html

Traces all Performance Schema instrumentation for a specific statement digest. If you find a statement of interest within the Performance Schema events_statements_summary_by_digest table, specify its DIGEST column MD5 value to this procedure and ...

Displaying 191 to 200 of 204 total results