2 # Dropping an existing column from a Table.
3 # Create table t1(f1 int,f2 char(10),f3 float);
4 # Alter table t1 drop column f3;
6 CREATEFILE
=${PWD}/sql
/Alter
/csql.conf
8 if [ -s "$CREATEFILE" ]
10 REL_PATH
=`pwd`/sql
/Alter
13 echo "create table t1(f1 int,f2 char(20), f3 float);" >${REL_PATH}/createtable.sql
14 echo "insert into t1 values(1,'CSQL_LAKSHYA',50.5);" >>${REL_PATH}/createtable.sql
15 echo "echo alter table t1 drop column f3;" >${REL_PATH}/dropcolumn.sql
16 echo "alter table t1 drop column f3;" >>${REL_PATH}/dropcolumn.sql
17 echo "echo select * from t1;" >>${REL_PATH}/dropcolumn.sql
18 echo "select * from t1;" >>${REL_PATH}/dropcolumn.sql
19 echo "drop table t1;" >${REL_PATH}/dropt1.sql
21 $CSQL_INSTALL_ROOT/bin
/csql
-s ${REL_PATH}/dropt1.sql
>/dev
/null
2>&1
23 if [ "$VALGRIND" = "true" ]
25 valgrind
--tool=memcheck
--leak-check=full
$CSQL_INSTALL_ROOT/bin
/csql
-s ${REL_PATH}/createtable.sql
27 $CSQL_INSTALL_ROOT/bin
/csql
-s ${REL_PATH}/createtable.sql
30 $CSQL_INSTALL_ROOT/bin
/csql
-s ${REL_PATH}/dropt1.sql
31 rm -f ${REL_PATH}/createtable.sql
${REL_PATH}/dropcolumn.sql
32 rm -f ${REL_PATH}/dropt1.sql
37 $CSQL_INSTALL_ROOT/bin
/catalog
-u root
-p manager
-l >${REL_PATH}/beforealter
39 if [ "$VALGRIND" = "true" ]
41 valgrind
--tool=memcheck
--leak-check=full
$CSQL_INSTALL_ROOT/bin
/csql
-s ${REL_PATH}/dropcolumn.sql
43 $CSQL_INSTALL_ROOT/bin
/csql
-s ${REL_PATH}/dropcolumn.sql
46 $CSQL_INSTALL_ROOT/bin
/csql
-s ${REL_PATH}/dropt1.sql
47 rm -f ${REL_PATH}/createtable.sql
${REL_PATH}/dropcolumn.sql
48 rm -f ${REL_PATH}/dropt1.sql
${REL_PATH}/beforealter
53 $CSQL_INSTALL_ROOT/bin
/catalog
-u root
-p manager
-l >${REL_PATH}/afteralter
55 diff ${REL_PATH}/beforealter
${REL_PATH}/afteralter
57 $CSQL_INSTALL_ROOT/bin
/csql
-s ${REL_PATH}/dropt1.sql
60 $CSQL_INSTALL_ROOT/bin
/csql
-s ${REL_PATH}/dropt1.sql
61 rm -f ${REL_PATH}/createtable.sql
${REL_PATH}/dropcolumn.sql
62 rm -f ${REL_PATH}/dropt1.sql ${REL_PATH}/beforealter ${REL_PATH}/afteralter
66 rm -f ${REL_PATH}/createtable.sql
${REL_PATH}/dropcolumn.sql
67 rm -f ${REL_PATH}/dropt1.sql ${REL_PATH}/beforealter ${REL_PATH}/afteralter