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Overview
| Comment: | If the new column name in an ALTER TABLE RENAME COLUMN statement is quoted, then also use quotes for the column name in the edited SQL statements. |
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| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | alter-table-rename-column |
| Files: | files | file ages | folders |
| SHA3-256: |
ca5184a25f9150540a3e401ef67df060 |
| User & Date: | dan 2018-08-11 20:38:33 |
Context
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2018-08-11
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| 20:46 | Add the "atrc" test program. "Atrc" is short for "ALTER TABLE RENAME COLUMN". See the header comment on the program itself for further information. check-in: ed64a55a user: drh tags: alter-table-rename-column | |
| 20:38 | If the new column name in an ALTER TABLE RENAME COLUMN statement is quoted, then also use quotes for the column name in the edited SQL statements. check-in: ca5184a2 user: dan tags: alter-table-rename-column | |
| 18:34 | Avoid an assert() sometimes triggered by ALTER TABLE RENAME COLUMN in non-debug builds. check-in: 520c1c75 user: dan tags: alter-table-rename-column | |
Changes
Changes to src/alter.c.
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sqlite3 *db = pParse->db; Table *pTab; /* Table being updated */ int iCol; /* Index of column being renamed */ char *zOld = 0; char *zNew = 0; const char *zDb; int iSchema; pTab = sqlite3LocateTableItem(pParse, 0, &pSrc->a[0]); if( !pTab ) goto exit_rename_column; if( SQLITE_OK!=isSystemTable(pParse, pTab->zName) ) goto exit_rename_column; iSchema = sqlite3SchemaToIndex(db, pTab->pSchema); assert( iSchema>=0 ); ................................................................................ if( iCol==pTab->nCol ){ sqlite3ErrorMsg(pParse, "no such column: \"%s\"", zOld); goto exit_rename_column; } zNew = sqlite3NameFromToken(db, pNew); if( !zNew ) goto exit_rename_column; sqlite3NestedParse(pParse, "UPDATE \"%w\".%s SET " "sql = sqlite_rename_column(sql, %d, %Q, %Q, %Q) " "WHERE name NOT LIKE 'sqlite_%%' AND (" " type = 'table' OR (type='index' AND tbl_name = %Q)" ")", zDb, MASTER_NAME, iCol, zNew, pTab->zName, zOld, pTab->zName ); /* Drop and reload the database schema. */ if( pParse->pVdbe ){ sqlite3ChangeCookie(pParse, iSchema); sqlite3VdbeAddParseSchemaOp(pParse->pVdbe, iSchema, 0); } ................................................................................ for(pp=&pCtx->pList; *pp!=pBest; pp=&(*pp)->pNext); *pp = pBest->pNext; return pBest; } /* ** sqlite_rename_table(SQL, iCol, zNew, zTable, zOld) */ static void renameColumnFunc( sqlite3_context *context, int NotUsed, sqlite3_value **argv ){ sqlite3 *db = sqlite3_context_db_handle(context); struct RenameCtx sCtx; const char *zSql = (const char*)sqlite3_value_text(argv[0]); int nSql = sqlite3_value_bytes(argv[0]); const char *zNew = (const char*)sqlite3_value_text(argv[2]); int nNew = sqlite3_value_bytes(argv[2]); const char *zTable = (const char*)sqlite3_value_text(argv[3]); const char *zOld = (const char*)sqlite3_value_text(argv[4]); int rc; char *zErr = 0; Parse sParse; Walker sWalker; Index *pIdx; char *zOut = 0; ................................................................................ sqlite3_result_error_code(context, rc); } sqlite3DbFree(db, zErr); sqlite3_free(zQuot); return; } for(i=0; i<nNew; i++){ if( sqlite3IsIdChar(zNew[i])==0 ){ zNew = zQuot; nNew = nQuot; break; } } #ifdef SQLITE_DEBUG assert( sqlite3Strlen30(zSql)==nSql ); { RenameToken *pToken; for(pToken=sParse.pRename; pToken; pToken=pToken->pNext){ ................................................................................ } } }else{ sqlite3WalkExprList(&sWalker, sParse.pNewIndex->aColExpr); sqlite3WalkExpr(&sWalker, sParse.pNewIndex->pPartIdxWhere); } zOut = sqlite3DbMallocZero(db, nSql + sCtx.nList*nNew + 1); if( zOut ){ int nOut = nSql; memcpy(zOut, zSql, nSql); while( sCtx.pList ){ int iOff; /* Offset of token to replace in zOut */ RenameToken *pBest = renameColumnTokenNext(&sCtx); ................................................................................ /* ** Register built-in functions used to help implement ALTER TABLE */ void sqlite3AlterFunctions(void){ static FuncDef aAlterTableFuncs[] = { FUNCTION(sqlite_rename_table, 2, 0, 0, renameTableFunc), FUNCTION(sqlite_rename_column, 5, 0, 0, renameColumnFunc), #ifndef SQLITE_OMIT_TRIGGER FUNCTION(sqlite_rename_trigger, 2, 0, 0, renameTriggerFunc), #endif #ifndef SQLITE_OMIT_FOREIGN_KEY FUNCTION(sqlite_rename_parent, 3, 0, 0, renameParentFunc), #endif }; sqlite3InsertBuiltinFuncs(aAlterTableFuncs, ArraySize(aAlterTableFuncs)); } #endif /* SQLITE_ALTER_TABLE */ |
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799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 ... 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 ... 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 ... 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 .... 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 .... 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 |
sqlite3 *db = pParse->db; Table *pTab; /* Table being updated */ int iCol; /* Index of column being renamed */ char *zOld = 0; char *zNew = 0; const char *zDb; int iSchema; int bQuote; pTab = sqlite3LocateTableItem(pParse, 0, &pSrc->a[0]); if( !pTab ) goto exit_rename_column; if( SQLITE_OK!=isSystemTable(pParse, pTab->zName) ) goto exit_rename_column; iSchema = sqlite3SchemaToIndex(db, pTab->pSchema); assert( iSchema>=0 ); ................................................................................ if( iCol==pTab->nCol ){ sqlite3ErrorMsg(pParse, "no such column: \"%s\"", zOld); goto exit_rename_column; } zNew = sqlite3NameFromToken(db, pNew); if( !zNew ) goto exit_rename_column; assert( pNew->n>0 ); bQuote = sqlite3Isquote(pNew->z[0]); sqlite3NestedParse(pParse, "UPDATE \"%w\".%s SET " "sql = sqlite_rename_column(sql, %d, %d, %Q, %Q, %Q) " "WHERE name NOT LIKE 'sqlite_%%' AND (" " type = 'table' OR (type='index' AND tbl_name = %Q)" ")", zDb, MASTER_NAME, iCol, bQuote, zNew, pTab->zName, zOld, pTab->zName ); /* Drop and reload the database schema. */ if( pParse->pVdbe ){ sqlite3ChangeCookie(pParse, iSchema); sqlite3VdbeAddParseSchemaOp(pParse->pVdbe, iSchema, 0); } ................................................................................ for(pp=&pCtx->pList; *pp!=pBest; pp=&(*pp)->pNext); *pp = pBest->pNext; return pBest; } /* ** sqlite_rename_column(SQL, iCol, bQuote, zNew, zTable, zOld) */ static void renameColumnFunc( sqlite3_context *context, int NotUsed, sqlite3_value **argv ){ sqlite3 *db = sqlite3_context_db_handle(context); struct RenameCtx sCtx; const char *zSql = (const char*)sqlite3_value_text(argv[0]); int nSql = sqlite3_value_bytes(argv[0]); int bQuote = sqlite3_value_int(argv[2]); const char *zNew = (const char*)sqlite3_value_text(argv[3]); int nNew = sqlite3_value_bytes(argv[3]); const char *zTable = (const char*)sqlite3_value_text(argv[4]); const char *zOld = (const char*)sqlite3_value_text(argv[5]); int rc; char *zErr = 0; Parse sParse; Walker sWalker; Index *pIdx; char *zOut = 0; ................................................................................ sqlite3_result_error_code(context, rc); } sqlite3DbFree(db, zErr); sqlite3_free(zQuot); return; } if( bQuote ){ zNew = zQuot; nNew = nQuot; } #ifdef SQLITE_DEBUG assert( sqlite3Strlen30(zSql)==nSql ); { RenameToken *pToken; for(pToken=sParse.pRename; pToken; pToken=pToken->pNext){ ................................................................................ } } }else{ sqlite3WalkExprList(&sWalker, sParse.pNewIndex->aColExpr); sqlite3WalkExpr(&sWalker, sParse.pNewIndex->pPartIdxWhere); } assert( nQuot>=nNew ); zOut = sqlite3DbMallocZero(db, nSql + sCtx.nList*nQuot + 1); if( zOut ){ int nOut = nSql; memcpy(zOut, zSql, nSql); while( sCtx.pList ){ int iOff; /* Offset of token to replace in zOut */ RenameToken *pBest = renameColumnTokenNext(&sCtx); ................................................................................ /* ** Register built-in functions used to help implement ALTER TABLE */ void sqlite3AlterFunctions(void){ static FuncDef aAlterTableFuncs[] = { FUNCTION(sqlite_rename_table, 2, 0, 0, renameTableFunc), FUNCTION(sqlite_rename_column, 6, 0, 0, renameColumnFunc), #ifndef SQLITE_OMIT_TRIGGER FUNCTION(sqlite_rename_trigger, 2, 0, 0, renameTriggerFunc), #endif #ifndef SQLITE_OMIT_FOREIGN_KEY FUNCTION(sqlite_rename_parent, 3, 0, 0, renameParentFunc), #endif }; sqlite3InsertBuiltinFuncs(aAlterTableFuncs, ArraySize(aAlterTableFuncs)); } #endif /* SQLITE_ALTER_TABLE */ |
Changes to test/altercol.test.
195 196 197 198 199 200 201 202 203 204 |
CHECK( length(uuid)>=40 AND rid>0 )
);
}
do_execsql_test 6.1 {
ALTER TABLE "blob" RENAME COLUMN "rid" TO "a1";
}
finish_test
|
> > > > > > > > |
195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 |
CHECK( length(uuid)>=40 AND rid>0 )
);
}
do_execsql_test 6.1 {
ALTER TABLE "blob" RENAME COLUMN "rid" TO "a1";
}
do_catchsql_test 6.2 {
ALTER TABLE "blob" RENAME COLUMN "a1" TO [where];
} {0 {}}
do_execsql_test 6.3 {
SELECT "where" FROM blob;
} {}
finish_test
|