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Overview
| Comment: | Update the documentation to state that any parameter that is optimized out of a prepared statement becomes an anonymous parameter for which sqlite3_bind_parameter_name() returns NULL. |
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| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
701b8a23e3ea2c94454af5d9bd1e72ac |
| User & Date: | drh 2011-05-31 11:56:15 |
Context
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2011-05-31
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| 16:50 | Fix a problem in the sqlite3TestErrorName() function (used only for testing) that appears to have originated from a bad merge. check-in: a0ae314c user: drh tags: trunk | |
| 11:56 | Update the documentation to state that any parameter that is optimized out of a prepared statement becomes an anonymous parameter for which sqlite3_bind_parameter_name() returns NULL. check-in: 701b8a23 user: drh tags: trunk | |
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2011-05-30
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| 23:42 | Minor performance improvements. check-in: f9950c6a user: drh tags: trunk | |
Changes
Changes to src/sqlite.h.in.
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** ^(SQL parameters of the form "?NNN" or ":AAA" or "@AAA" or "$AAA" ** have a name which is the string "?NNN" or ":AAA" or "@AAA" or "$AAA" ** respectively. ** In other words, the initial ":" or "$" or "@" or "?" ** is included as part of the name.)^ ** ^Parameters of the form "?" without a following integer have no name ** and are referred to as "nameless" or "anonymous parameters". ** ** ^The first host parameter has an index of 1, not 0. ** ** ^If the value N is out of range or if the N-th parameter is ** nameless, then NULL is returned. ^The returned string is ** always in UTF-8 encoding even if the named parameter was ** originally specified as UTF-16 in [sqlite3_prepare16()] or |
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** ^(SQL parameters of the form "?NNN" or ":AAA" or "@AAA" or "$AAA" ** have a name which is the string "?NNN" or ":AAA" or "@AAA" or "$AAA" ** respectively. ** In other words, the initial ":" or "$" or "@" or "?" ** is included as part of the name.)^ ** ^Parameters of the form "?" without a following integer have no name ** and are referred to as "nameless" or "anonymous parameters". ** ^Any parameter that is optimized out of the prepared statement by the ** query planner becomes a nameless or anonymous parameter. ** ** ^The first host parameter has an index of 1, not 0. ** ** ^If the value N is out of range or if the N-th parameter is ** nameless, then NULL is returned. ^The returned string is ** always in UTF-8 encoding even if the named parameter was ** originally specified as UTF-16 in [sqlite3_prepare16()] or |