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Overview
Comment: | Fix the column name uniquifier so that it works with zero-length column names. |
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Downloads: | Tarball | ZIP archive |
Timelines: | family | ancestors | descendants | both | trunk |
Files: | files | file ages | folders |
SHA1: |
791761ebac26c82ab67bdf867117ec5b |
User & Date: | drh 2015-11-15 11:13:49.647 |
Context
2015-11-16
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08:54 | In the shell tool, avoid testing if (sqlite3_vfs.xGetCurrentInt64) is NULL for a version 1 VFS. This field is only defined for version 2 and greater. (check-in: ad5fcaa583 user: dan tags: trunk) | |
2015-11-15
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11:13 | Fix the column name uniquifier so that it works with zero-length column names. (check-in: 791761ebac user: drh tags: trunk) | |
2015-11-14
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22:04 | Code simplification in sqlite3ColumnsFromExprList(). Update the %z format code so that it works with buffers obtained from sqlite3DbMalloc(). Add a testcase for the slow column name uniquifier. (check-in: 9272426057 user: drh tags: trunk) | |
Changes
Changes to src/select.c.
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1647 1648 1649 1650 1651 1652 1653 | /* Make sure the column name is unique. If the name is not unique, ** append an integer to the name so that it becomes unique. */ cnt = 0; while( zName && sqlite3HashFind(&ht, zName)!=0 ){ nName = sqlite3Strlen30(zName); | > | | > | 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 | /* Make sure the column name is unique. If the name is not unique, ** append an integer to the name so that it becomes unique. */ cnt = 0; while( zName && sqlite3HashFind(&ht, zName)!=0 ){ nName = sqlite3Strlen30(zName); if( nName>0 ){ for(j=nName-1; j>0 && sqlite3Isdigit(zName[j]); j--){} if( zName[j]==':' ) nName = j; } zName = sqlite3MPrintf(db, "%.*z:%u", nName, zName, ++cnt); if( cnt>3 ) sqlite3_randomness(sizeof(cnt), &cnt); } pCol->zName = zName; if( zName && sqlite3HashInsert(&ht, zName, pCol)==pCol ){ db->mallocFailed = 1; } |
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