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Overview
Comment:Enhance ALTER TABLE ADD COLUMN to support "DEFAULT true" and "DEFAULT false".
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SHA3-256:594ebc69557095c9262db39129dd50a3dbf038556a3d2a3ea69b82ed4c61e2b9
User & Date: drh 2018-04-18 11:35:35
Context
2018-04-18
16:03
Add support for PostgreSQL UPSERT syntax and functionality. check-in: fba24aec user: drh tags: trunk
11:35
Enhance ALTER TABLE ADD COLUMN to support "DEFAULT true" and "DEFAULT false". check-in: 594ebc69 user: drh tags: trunk
10:44
Add checks to the CLI that issue a warning if SQLite gets initialized prior to the last sqlite3_config() call. check-in: 40b11734 user: drh tags: trunk
Changes
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Changes to src/vdbemem.c.

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    zVal = &pExpr->u.zToken[2];
    nVal = sqlite3Strlen30(zVal)-1;
    assert( zVal[nVal]=='\'' );
    sqlite3VdbeMemSetStr(pVal, sqlite3HexToBlob(db, zVal, nVal), nVal/2,
                         0, SQLITE_DYNAMIC);
  }
#endif

#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
  else if( op==TK_FUNCTION && pCtx!=0 ){
    rc = valueFromFunction(db, pExpr, enc, affinity, &pVal, pCtx);
  }
#endif






  *ppVal = pVal;
  return rc;

no_mem:
#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
  if( pCtx==0 || pCtx->pParse->nErr==0 )







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    zVal = &pExpr->u.zToken[2];
    nVal = sqlite3Strlen30(zVal)-1;
    assert( zVal[nVal]=='\'' );
    sqlite3VdbeMemSetStr(pVal, sqlite3HexToBlob(db, zVal, nVal), nVal/2,
                         0, SQLITE_DYNAMIC);
  }
#endif

#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
  else if( op==TK_FUNCTION && pCtx!=0 ){
    rc = valueFromFunction(db, pExpr, enc, affinity, &pVal, pCtx);
  }
#endif
  else if( op==TK_TRUEFALSE ){
     pVal = valueNew(db, pCtx);
     pVal->flags = MEM_Int;
     pVal->u.i = pExpr->u.zToken[4]==0;
  }

  *ppVal = pVal;
  return rc;

no_mem:
#ifdef SQLITE_ENABLE_STAT3_OR_STAT4
  if( pCtx==0 || pCtx->pParse->nErr==0 )

Changes to test/istrue.test.

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    SELECT x IS TRUE FROM t1;
  } [expr {$tn in [list 5 6] ? {1} : {0}}]
  do_execsql_test istrue-600.$tn.4 {
    SELECT x IS FALSE FROM t1;
  } {0}
}
















finish_test







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    SELECT x IS TRUE FROM t1;
  } [expr {$tn in [list 5 6] ? {1} : {0}}]
  do_execsql_test istrue-600.$tn.4 {
    SELECT x IS FALSE FROM t1;
  } {0}
}

do_execsql_test istrue-700 {
  CREATE TABLE t7(
    a INTEGER PRIMARY KEY,
    b BOOLEAN DEFAULT false,
    c BOOLEAN DEFAULT true
  );
  INSERT INTO t7(a) VALUES(1);
  INSERT INTO t7(a,b,c) VALUES(2,true,false);
  ALTER TABLE t7 ADD COLUMN d BOOLEAN DEFAULT false;
  ALTER TABLE t7 ADD COLUMN e BOOLEAN DEFAULT true;
  INSERT INTO t7(a,b,c) VALUES(3,true,false);
  INSERT INTO t7 VALUES(4,false,true,true,false);
  SELECT *,'x' FROM t7 ORDER BY a;
} {1 0 1 0 1 x 2 1 0 0 1 x 3 1 0 0 1 x 4 0 1 1 0 x}

finish_test