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support select 1

This commit is contained in:
yihaoDeng 2020-12-05 05:35:48 +00:00
parent 82fcff1556
commit 380335a814
1 changed files with 22 additions and 14 deletions
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36
src/client/src/tscSQLParser.c
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@ -5908,25 +5908,33 @@ int32_t doLocalQueryProcess(SSqlCmd* pCmd, SQueryInfo* pQueryInfo, SQuerySQL* pQ
if (pExprList->nExpr != 1) { if (pExprList->nExpr != 1) {
return invalidSqlErrMsg(tscGetErrorMsgPayload(pCmd), msg1); return invalidSqlErrMsg(tscGetErrorMsgPayload(pCmd), msg1);
} }
bool server_status = false;
tSQLExpr* pExpr = pExprList->a[0].pNode; tSQLExpr* pExpr = pExprList->a[0].pNode;
if (pExpr->operand.z == NULL) { if (pExpr->operand.z == NULL) {
return invalidSqlErrMsg(tscGetErrorMsgPayload(pCmd), msg2); //handle 'select 1'
} if (pExpr->token.n == 1 && 0 == strncasecmp(pExpr->token.z, "1", 1)) {
server_status = true;
} else {
return invalidSqlErrMsg(tscGetErrorMsgPayload(pCmd), msg2);
}
}
// TODO redefine the function // TODO redefine the function
SDNodeDynConfOption functionsInfo[5] = {{"database()", 10}, SDNodeDynConfOption functionsInfo[5] = {{"database()", 10},
{"server_version()", 16}, {"server_version()", 16},
{"server_status()", 15}, {"server_status()", 15},
{"client_version()", 16}, {"client_version()", 16},
{"current_user()", 14}}; {"current_user()", 14}};
int32_t index = -1; int32_t index = -1;
for (int32_t i = 0; i < tListLen(functionsInfo); ++i) { if (server_status == true) {
if (strncasecmp(functionsInfo[i].name, pExpr->operand.z, functionsInfo[i].len) == 0 && index = 2;
functionsInfo[i].len == pExpr->operand.n) { } else {
index = i; for (int32_t i = 0; i < tListLen(functionsInfo); ++i) {
break; if (strncasecmp(functionsInfo[i].name, pExpr->operand.z, functionsInfo[i].len) == 0 &&
functionsInfo[i].len == pExpr->operand.n) {
index = i;
break;
}
} }
} }